[2.1.0] Fix queue race conditions (#178)

* Add TenantDoesNotExist exception, fix queued migrator serialization

* wip

* Apply fixes from StyleCI

* Use only one config for  queueing

* Apply fixes from StyleCI

* rename test

* rename test

src/StorageDrivers/Database/DatabaseStorageDriver.php

@@ -10,6 +10,7 @@ use Stancl\Tenancy\Contracts\StorageDriver;
 use Stancl\Tenancy\DatabaseManager;
 use Stancl\Tenancy\Exceptions\DomainsOccupiedByOtherTenantException;
 use Stancl\Tenancy\Exceptions\TenantCouldNotBeIdentifiedException;
+use Stancl\Tenancy\Exceptions\TenantDoesNotExistException;
 use Stancl\Tenancy\Exceptions\TenantWithThisIdAlreadyExistsException;
 use Stancl\Tenancy\StorageDrivers\Database\DomainModel as Domains;
 use Stancl\Tenancy\StorageDrivers\Database\TenantModel as Tenants;
@@ -59,7 +60,13 @@ class DatabaseStorageDriver implements StorageDriver
 
     public function findById(string $id): Tenant
     {
-        return Tenant::fromStorage(Tenants::find($id)->decoded())
+        $tenant = Tenants::find($id);
+
+        if (! $tenant) {
+            throw new TenantDoesNotExistException($id);
+        }
+
+        return Tenant::fromStorage($tenant->decoded())
             ->withDomains($this->getTenantDomains($id));
     }
 

src/StorageDrivers/RedisStorageDriver.php

@@ -9,6 +9,7 @@ use Illuminate\Foundation\Application;
 use Stancl\Tenancy\Contracts\StorageDriver;
 use Stancl\Tenancy\Exceptions\DomainsOccupiedByOtherTenantException;
 use Stancl\Tenancy\Exceptions\TenantCouldNotBeIdentifiedException;
+use Stancl\Tenancy\Exceptions\TenantDoesNotExistException;
 use Stancl\Tenancy\Exceptions\TenantWithThisIdAlreadyExistsException;
 use Stancl\Tenancy\Tenant;
 
@@ -73,7 +74,13 @@ class RedisStorageDriver implements StorageDriver
 
     public function findById(string $id): Tenant
     {
-        return $this->makeTenant($this->redis->hgetall("tenants:$id"));
+        $data = $this->redis->hgetall("tenants:$id");
+
+        if (! $data) {
+            throw new TenantDoesNotExistException($id);
+        }
+
+        return $this->makeTenant($data);
     }
 
     public function getTenantIdByDomain(string $domain): ?string